Hi Guys I'm not a mechanic so don't laugh ! I Can't get my fan for the air conditioning to work on my dads 77 camaro that has not been started for 20 years until a month ago or so. I had the right fender off last week and was able to test it with a battery and it went on . However now I am replacing the warped dash and decided to get back on the AC Fan issue since it is all open. I figured I could bypass the fan control there to test if it is just the switch, there was 1 brown wire there and 3 blues , I jumped many patterns across the plug terminal where it normally plugged into the switch. hoping to hear the fan kick on ! No luck ..any suggestions on what i can check ? I already checked the fuse.. Thanks Guys

 

I would suggest you get an inexpensive test meter or test lamp. You can check to see which wire has 12v. power, and then check to see which wires have the blower motor resistive load. Be sure you've also got the blower motor grounded when testing, or applying 12v. to it, or it wont give you a reading, or run without a good ground.